Claims
- 1. Proteinaceous microparticles which are essentially the same as those obtained without heating by the following steps:
- a) precipitating insoluble material in a liquid mixture, which contains a whey protein together with a metal element, by lowering pH of the liquid mixture with an acid to a pH in the range from 3 to 5;
- b) removing from said liquid mixture the thus-precipitated insoluble material to obtain a resulting liquid mixture;
- c) raising the pH of the resulting liquid mixture to a pH in the range of from 6 to 9;
- d) mixing product from step (c) with a hydrophilic organic solvent to form material containing the proteinaceous microparticles, and optionally,
- e) separating said proteinaceous microparticles from the material produced by step (d).
- 2. Proteinaceous microparticles according to claim 1, wherein the protein concentration in the liquid mixture is 0.05 to 10% by weight based on the liquid mixture.
- 3. Proteinaceous microparticles according to claim 1, wherein the metal element is derived from an added metal salt.
- 4. Proteinaceous microparticles according to claim 1, wherein the metal element is derived from an added natural mineral material.
- 5. Proteinaceous microparticles according to claim 4, wherein the natural mineral material is a milk serum mineral or bovine bone powder.
- 6. Proteinaceous microparticles according to claim 4, wherein the natural mineral material is milk serum calcium.
- 7. Proteinaceous microparticles according to claim 1, wherein the acid is hydrochloric acid, sulfuric acid, lactic acid, acetic acid or phosphoric acid.
- 8. Proteinaceous microparticles according to claim 1, wherein the amount of the hydrophilic organic solvent is not less than 0.3 times (v/v) that of the liquid mixture.
- 9. Proteinaceous microparticles according to claim 1, wherein the hydrophilic organic solvent is a monohydric or polyhydric alcohol having 1 to 5 carbon atoms.
- 10. Proteinaceous microparticles according to claim 1, wherein the hydrophilic organic solvent is ethanol.
- 11. Proteinaceous microparticles according to claim 1, wherein the product of step (c) comprises solids dispersed in a liquid, and supernatant separated from the solids in the product from step (c) is used in step (d).
- 12. Proteinaceous microparticles according to claim 11, wherein:
- the metal element is a member selected from the group consisting of sodium, potassium, magnesium, calcium, iron and zinc;
- the acid is a member selected from the group consisting of hydrochloric acid, sulfuric acid, lactic acid, acetic acid and phosphoric acid;
- the liquid mixture in step (a) has a protein concentration of from 0.05 to 10 percent by weight, based on the weight of the liquid mixture; and
- the hydrophilic organic solvent is a monohydric or polyhydric alcohol having from 1 to 5 carbon atoms, and is employed in an amount of not less than 0.3 times (v/v), based on said thus-separated supernatant.
- 13. Proteinaceous microparticles which are at least substantially the same as those obtained by:
- a) precipitating insoluble material in a liquid mixture of acid whey protein and a metal element by reducing pH of the liquid mixture to a pH of at most 6;
- b) removing the insoluble material from the product of step (a) to obtain a liquid;
- c) raising the pH of the liquid obtained from step (b) to a pH within the range of from 6 to 9 to obtain a further mixture; and
- d) mixing the further mixture with a hydrophilic organic solvent to form the proteinaceous microparticles.
- 14. Proteinaceous microparticles according to claim 13, wherein the protein content in the acid whey is 0.05 to 10% by weight based on the acid whey.
- 15. Proteinaceous microparticles according to claim 9, wherein an aqueous dispersion of the proteinaceous microparticles having protein content of 2 to 15% by weight has calcium content of 0.2 to 20% by weight, and the dispersion at 25.degree. C. shows such thixotropic properties that the area of the hysteresis loop is in the range of 100 to 6,000 Pa.cndot.s.sup.-1, and viscosity is in the range of 5 to 150 Pa.cndot.s at the rate of shear of 6s.sup.-1, 3 to 70 Pa.cndot.s at the rate of shear of 10s.sup.-1 and 1 to 30 Pa.cndot.s at the rate of shear of 20s.sup.-1.
- 16. Proteinaceous microparticles according to claim 15, wherein the aqueous dispersion at 25.degree. C. shows such thixotropic properties that the area of the hysteresis loop is in the range of 400 to 6,000 Pa.cndot.s.sup.-1, and viscosity is in the range of 20 to 150 Pa.cndot.s at the rate of shear of 6s.sup.-1, 5 to 70 Pa.cndot.s at the rate of shear of 10s.sup.-1 and 5 to 30 Pa.cndot.s at the rate of shear of 20s.sup.-.
- 17. Proteinaceous microparticles according to claim 15, wherein the aqueous dispersion at 25.degree. C. shows such thixotropic properties that the area of the hysteresis loop is in the range of 400 to 4,000 Pa.cndot.s.sup.-1, and viscosity is in the range of 20 to 75 Pa.cndot.s at the rate of shear of 6s.sup.-1, 5 to 35 Pa.cndot.s at the rate of shear of 10s.sup.-1 and 5 to 15 Pa.cndot.s at the rate of shear of 20s.sup.-1.
- 18. Water-insoluble thixotropic proteinaceous microparticles having an average particle size from 0.01 to 1 micron, an aggregational ability and rheological properties of shortening of fat, said microparticles being the same as those obtained without heating by:
- a) lowering pH of a liquid mixture, which contains a whey protein together with a metal element, to not more than pH 6 by using an acid;
- b) removing insoluble material formed by the pH lowering step;
- c) raising the pH to a pH of from 6 to 9; and
- d) mixing the resulting liquid mixture with a hydrophilic organic solvent to form the proteinaceous microparticles, or said proteinaceous microparticles in the form of an aqueous dispersion, whose protein content is adjusted to 2 to 15% by weight, having a calcium content of from 0.2 to 20% by weight, and showing such thixotropic properties at 25.degree. C. that the area of the hysteresis loop is in the range of from 100 to 6,000 Pa.cndot.s.sup.-1, and viscosity is in the range of from 5 to 150 Pa.cndot.s at the rate of shear 6s.sup.-1, from 3 to 70 Pa.cndot.s at the rate of shear of 10s.sup.-1 and from 1 to 30 Pa.cndot.s at the rate of shear of 200s.sup.-1.
- 19. Water-insoluble, thixotropic proteinaceous microparticles according to claim 18 having a shortening-like organoleptic property.
Priority Claims (1)
Number |
Date |
Country |
Kind |
5-286552 |
Nov 1993 |
JPX |
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CROSS-REFERENCE TO RELATED APPLICATIONS
This application is a continuation-in-part application of copending application Ser. No. 08/341,899 filed Nov. 15, 1994 now U.S. Pat. No. 5,750,183.
US Referenced Citations (6)
Foreign Referenced Citations (1)
Number |
Date |
Country |
407184556 |
Jul 1995 |
JPX |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
341899 |
Nov 1994 |
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